Left-Handers’ Day
International Left-Handers’ Day is August the thirteenth. The International Left-Handers Day, Web site says the Left-Handers Club started the holiday in 1992. It wanted left-handers around the world to celebrate. And it wanted to bring attention to the everyday problems of people who use their left hands.
One of these problems is difficulty using equipment and tools, like scissors. In general, most tools and equipment are made for people who are right-handed. The Left-Handers Club tries to educate designers and producers to consider the safety of left-handed people when producing their products.
Another problem is that many people have considered it bad to be left-handed. Some teachers and parents have tried to force children who used their left hands to use their right ones instead.
Scientists do not really know why some people are left-handed. They have believed the reason is genetic.They say the gene（基因） increases the chance of being left-handed. It appears to play an important part in deciding which part of the brain controls different activities. In right-handed people, the left side of the brain usually controls speech and language. The right side controls feelings. However, the opposite is often true in left-handed people.
Scientists believe the gene is responsible for this. The gene showed a link with left-handedness in nine to twelve percent of the population.
About ten percent of people around the world are left-handed.
【小题1】International Left-handers’ Day aims to（目的是） bring attention to .A．the right-handersB．the everyday problemsC．the people who have some difficulty using equipment and toolsD．the everyday problems of people who use their left hands【小题2】How many problems of people who use their left hands are mentioned?A．One.B．Two.C．Three.D．Four.【小题3】As to why some people are left-handed, scientists believe the reason is .A．habitsB．geneticsC．parentsD．birthplaces【小题4】 of people around the world are left-handers.A．About 9%B．About 12%C．About 9.12%D．About 10%D
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(答案→)D
解析：本文介绍了世界左撇子日，以及科学家分析的左撇子的原因。
【小题1】D 细节题。根据第一段最后2行And it wanted to bring attention to the everyday problems of people who use their left hands.说明D正确。
【小题2】B 归纳总结题。根据文章第2段One of these problems is difficulty using equipment and tools, like scissors.第3段Another problem is that many people have considered it bad to be left-handed. 说明在本文中提及了两个和左撇子有关系的问题，故B正确。
【小题3】B 细节题。根据第四段1,2行Scientists do not really know why some people are left-handed. They have believed the reason is genetic.说明基因是左撇子的原因，故B正确。
【小题4】D 细节题。根据文章最后一段About ten percent of people around the world are left-handed.说明D正确。